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Weather & Climate
Flandreau, South Dakota, United States
Overview
Climate data and monthly weather averages for Flandreau.
Key Metrics
Annual Avg
7.7°C
Summer Avg
21.9°C
Winter Avg
-7.3°C
Record High
42°C
Record Low
-37.9°C
Annual Precipitation
662.7 mm
Avg Humidity
72%
Summer Humidity
65%
Winter Humidity
84%
Monthly Averages
| Month | High (°C) | Avg (°C) | Low (°C) | Rain (mm) | Humidity (%) | Sunshine (h) | Wind (kph) |
|---|---|---|---|---|---|---|---|
| Jan | 9.5° | -8.7° | -37.9° | 12.1 | 85% | 61 | 58.7 |
| Feb | 19.6° | -7.1° | -30.1° | 17.6 | 81% | 86 | 64.8 |
| Mar | 27.8° | 0.6° | -30.4° | 33.5 | 72% | 117 | 62.4 |
| Apr | 31.9° | 7.6° | -14.3° | 66.3 | 66% | 146 | 61.5 |
| May | 34.5° | 14.3° | -5° | 88.7 | 66% | 174 | 58.2 |
| Jun | 38.5° | 20.4° | 5.3° | 106.8 | 68% | 188 | 49.9 |
| Jul | 42° | 23.7° | 8.6° | 78.4 | 63% | 206 | 44.7 |
| Aug | 38.8° | 21.7° | 5.9° | 83.7 | 65% | 171 | 46.8 |
| Sep | 36° | 17.1° | 0.4° | 78.3 | 65% | 128 | 54.9 |
| Oct | 29.6° | 8.1° | -13.5° | 54.3 | 69% | 90 | 61.1 |
| Nov | 23.6° | 0.9° | -18.8° | 21.3 | 75% | 58 | 58.2 |
| Dec | 12° | -6.2° | -27.6° | 21.7 | 85% | 45 | 67 |
Frequently Asked Questions
Sources: NASA POWER · Last updated: 2025
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